It is a seemingly well-known fact that the speed of light cannot be breached in our universe, but that has been outright proven wrong by researchers from NEC Research Institute in Princeton, US. They ...

Superfluid vacuum theory (SVT), sometimes known as the BEC vacuum theory, is an approach in theoretical physics and quantum mechanics where the fundamental physical vacuum (non-removable background) i...

The hypothetical particles tachyons have inspired many occurrences of tachyons in fiction. The use of the word in science fiction dates back at least to 1974 when Joe Haldeman's novel The Forever War...

An ansible is a fictional machine capable of instantaneous or superluminal communication. Typically it is depicted as a lunch-box-sized object with some combination of microphone, speaker, keyboard an...

A water wave analogue of the Casimir effect. Two parallel plates are submerged into colored water contained in a sonicator. When the sonicator is turned on, waves are excited imitating vacuum fluctu...

An interstellar teleporter is a hypothetical technology appearing in science fiction, typically in soft sci-fi, which teleports people and/or other objects over interstellar distances instantaneously....

Modern searches for Lorentz violation are scientific studies that look for deviations from Lorentz invariance or symmetry, a set of fundamental frameworks that underpin modern science and fundamental ...

A farcaster is an instantaneous transportation device in the fictional Hyperion universe. Farcasters allow two points separated by a vast distance to be brought together at a Farcaster Portal. The F...

It is a seemingly well-known fact that the speed of light cannot be breached in our universe, but that has been outright proven wrong by researchers from NEC Research Institute in Princeton, US. They ...

Tachyon condensation is a process in particle physics in which the system can lower its energy by spontaneously producing particles. The end result is a "condensate" of particles that fills the volum...

Proteus in the Underworld (1995) is a science fiction novel by Charles Sheffield. The book is set in the same universe as his previous works Proteus Unbound (1989) and Sight of Proteus (1978), althoug...

A jump drive is one of the speculative inventions in science fiction, a method of traveling faster than light (FTL). Related concepts are hyperdrive, warp drive and interstellar teleporter. The key ch...

A Krasnikov tube is a speculative mechanism for space travel involving the warping of spacetime into permanent superluminal tunnels. The resulting structure is analogous to a wormhole with the endpoin...

The Alderson drive, named after Jet Propulsion Laboratory scientist Dan Alderson, is a fictional device that enables instantaneous interstellar transportation. It is featured in the CoDominium series ...

The fictional universe of The Hitchhiker's Guide to the Galaxy series by Douglas Adams is a galaxy-spanning society of interacting extraterrestrial cultures. The technological level in the series is h...

A tachyonic antitelephone is a hypothetical device in theoretical physics that could be used to send signals into one's own past. Albert Einstein in 1907presented a thought experiment of how faster-th...

In science fiction, ultrawaves (hyperwaves or subwaves) are transmissions or signals that may propagate faster than light through either normal space, or alternate space, such as hyperspace or "subspa...

Warp drive is a hypothetical faster-than-light (FTL) propulsion system in many works, most notably Star Trek. A spacecraft equipped with a warp drive may travel at apparent speeds greater than that of...

The Alcubierre drive or Alcubierre metric (referring to metric tensor) is a speculative idea based on a solution of Einstein's field equations in general relativity as proposed by theoretical physicis...

Variable speed of light (VSL) is a hypothesis that states that the speed of light, usually denoted by c, may be a function of space and time. Variable speed of light occurs in some situations of cla...

A tachyonic field, or simply tachyon, is a quantum field with an imaginary mass. The term "tachyon" was coined by Gerald Feinberg in a 1967 paper that studied quantum fields with imaginary mass. Fei...

In E.E. "Doc" Smith's fictional Lensman series, the Bergenholm generator is the key to faster-than-light transportation. It functions by rendering an object inertialess so that it instantly takes on ...

The Day After Tomorrow (also known as Into Infinity in the United Kingdom) is a 1975 British science-fiction television drama produced by Gerry Anderson between the two series of Space: 1999. Written ...

"Future Echoes" is the second episode of the science fiction sitcom Red Dwarf series one, and was first broadcast on the British television channel BBC2 on 22 February 1988. Written by co-creators Rob...